CN109357586A - Measuring tool for turbine blade root switching elevation carrection - Google Patents
Measuring tool for turbine blade root switching elevation carrection Download PDFInfo
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- CN109357586A CN109357586A CN201811506523.8A CN201811506523A CN109357586A CN 109357586 A CN109357586 A CN 109357586A CN 201811506523 A CN201811506523 A CN 201811506523A CN 109357586 A CN109357586 A CN 109357586A
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- root
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- tooth
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
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- General Physics & Mathematics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The present invention provides a kind of measuring tools for turbine blade root switching elevation carrection, can solve manufacturing cost height existing for the measuring tool of existing blade root switching elevation carrection, measure stability and reliability is poor, volume is big, measures inconvenient problem.It includes the high template of inner arc root, the high template of back arc air inlet lateral root and the back high template of arc outlet lateral root, and the high template of inner arc root, the high template of back arc air inlet lateral root and the back high template of arc outlet lateral root are arranged in a one-to-one correspondence with the high face of inner arc root of blade root, the high face of back arc air inlet lateral root and the back high face of arc outlet lateral root respectively；Tooth shape locating face and tooth top positioning surface are machined on the one side of the high template of inner arc root, the high template of back arc air inlet lateral root and the back high template of arc outlet lateral root, the top surface of the high template of inner arc root is the extended surface in the high face of inner arc root, the top surface of the back high template of arc air inlet lateral root is the extended surface for carrying on the back the high face of arc air inlet lateral root, and the top surface of the back high template of arc outlet lateral root is the extended surface for carrying on the back the high face of arc outlet lateral root.
Description
Technical field
It is specially a kind of for turbine blade root switching height the present invention relates to turbine Blade Machining fields of measurement
The measuring tool of measurement.
Background technique
Fig. 1 is a kind of fir tree blade root of turbine blade, and blade root 1 includes tenon tooth 2 and intermediate 3, the top surface of intermediate 3
For the high face of blade root root, the high face of blade root root is arc surface, and the high face of blade root root is by the high face 4 of inner arc root, the high face 5 of back arc air inlet lateral root and back
The high face 6 of arc outlet lateral root forms, and when processing, needs to measure the relative altitude in blade root root high face and tenon tooth working face 7, i.e. blade root turn
Connect height.The margin of tolerance of blade root switching height is small, is generally only ± 0.3mm, and measurement accuracy requires high.
Existing blade root switching height measuring tool is as shown in Figures 2 to 4 comprising gage frame 11, subordinate in gage frame
Side is equipped with the fixture 12 for fixing blade root, and the two lateral edge short transverse interval of gage frame above fixture is equipped with more
A gear item 13, gear item are usually to be fixed by bolts in gage frame, for placing inner arc detection template 14 on gear item
Template 15 is detected with back arc, is machined with respectively on inner arc detection template and back arc detection template consistent with the high face shape of blade root root
When detection, the blade root of blade is fixed on fixture for imitation profile 16, and the shelves of corresponding height are selected according to the height in the high face of blade root root
Inner arc detection template and the both ends for carrying on the back arc detection template are placed individually on the gear item, it is high then to measure blade root root by position item
Difference in height between face and imitation profile, if within the scope of design requirement, and it is qualified.
But such measuring tool has the disadvantage in that 1) inner arc detection template and carries on the back arc detection template needs across the shelves of two sides
Position item, volume is big, and imitation profile area is big, and imitation profile processing cost is high, increases inner arc detection template and carries on the back arc detection template
Manufacturing cost；2) gear item is fixed by bolts in gage frame, measuring tool transportational process in use and in workshop
In easily cause the loosening of gear item, cause the height change of gear item, and the height change of gear item will directly affect blade root
The measurement accuracy for height of transferring, so that the stability and reliability of blade root switching elevation carrection are poor；3) measuring tool volume is big, weight
Greatly, measurement is inconvenient.
Summary of the invention
Manufacturing cost existing for measuring tool for existing blade root switching elevation carrection is high, measure stability and reliability compared with
Difference, volume is big, measures inconvenient technical problem, and the present invention provides a kind of for turbine blade root switching elevation carrection
Measuring tool, small in size, light-weight, measurement is convenient, and manufacturing cost is low, and measurement result is accurate, reliable and stability is good.
Its technical solution is such that a kind of measuring tool for turbine blade root switching elevation carrection, and feature exists
In: it includes the high template of inner arc root, the high template of back arc air inlet lateral root and the back high template of arc outlet lateral root, the high sample of inner arc root
Plate, the high template of the back arc air inlet lateral root and the back high template of arc outlet lateral root respectively with the high face of inner arc root of blade root, back arc
The high face of air inlet lateral root and the back high face of arc outlet lateral root are arranged in a one-to-one correspondence；The high template of the inner arc root, the back arc air inlet lateral root
Tooth shape locating face and tooth top positioning surface, the tooth are machined on the one side of high template and the back high template of arc outlet lateral root
Shape positioning surface is bonded with the tenon tooth working face of first tooth of blade root, the tooth top of the tooth top positioning surface and first tooth and
The tooth top of last tooth of the blade root reclines；The top surface of the high template of inner arc root is the extension in the high face of inner arc root
Face, the top surface of the back high template of arc air inlet lateral root are the extended surface in the back high face of arc air inlet lateral root, and the back arc goes out gas side
The top surface of the high template of root is the extended surface in the back high face of arc outlet lateral root.
It is further characterized by:
The high template of the inner arc root, the high template of the back arc air inlet lateral root and the high template of the back arc outlet lateral root are lamellar
Structure, the tooth shape locating face and tooth top positioning surface setting are high in the high template of the inner arc root, the back arc air inlet lateral root
On the thickness side of template and the back high template of arc outlet lateral root.
Also divide on the high template of the inner arc root, the high template of the back arc air inlet lateral root and the high template of the back arc outlet lateral root
It is not machined with intermediate measuring surface, the intermediate measuring surface is located above the tooth shape locating face and the centre with the blade root
Body side surface is correspondingly arranged, and the intermediate measuring surface is arranged with the intermediate outside envelope of body side surface.
The intermediate measuring surface is with intermediate outside 0.2 mm of envelope of body side surface ~ 0.3mm setting.
The escape groove of the center tooth for avoiding the blade root is machined in the middle part of the tooth top positioning surface.
The tooth top positioning surface is parallel to the common tangent of the tooth top of first tooth and the tooth top of last tooth.
The beneficial effects of the present invention are:
Blade root switching height measuring tool of the invention, the high face of inner arc root, the high face of back arc air inlet lateral root and the back arc outlet of corresponding blade root
The high face of lateral root is respectively provided with the high template of inner arc root, the high template of back arc air inlet lateral root and the back high template of arc outlet lateral root, by
Tooth shape locating face and tooth top positioning surface are processed on every piece of template, it can be achieved that template and blade root tenon tooth working face accurate positionin,
The top surface of the high template of inner arc root, the top surface for carrying on the back the high template of arc air inlet lateral root, the top surface for carrying on the back the high template of arc outlet lateral root separately design
For the high face of inner arc root extended surface, carry on the back the high face of arc air inlet lateral root extended surface, carry on the back the high face of arc outlet lateral root extended surface, thus sample
After plate and blade root are close to positioning, the difference in height between the top surface of every piece of template and the corresponding high face of blade root root is directly measured,
Measurement result is accurate, reliable, stability is good；Compared with traditional inner arc detection template and back arc detection template, the present invention passes through
Three individual templates are respectively set, greatly reduce the top surface area of template, reduce the processing cost of template top surface, in turn
Reduce the processing cost of template, and only measurement can be completed by three templates in this measuring tool, without be reconfigured gage frame and
Blade holder, small in size, light-weight, easily and fast, measuring tool cost substantially reduces for measurement.
Detailed description of the invention
Fig. 1 is the fir tree blade root structural schematic diagram of turbine blade；
Fig. 2 is the main view of existing blade root switching height measuring tool；
Fig. 3 is the cross-sectional view of the line A-A along Fig. 2 (fixture is not shown)；
Fig. 4 is that inner arc detects template and carries on the back the left view that arc detects template in Fig. 3；
Fig. 5 is the positional relationship top view of measuring tool of the invention and blade root；
Fig. 6 is the left view of Fig. 5；
Fig. 7 is the measuring tool schematic diagram removed in Fig. 6 after blade root.
Appended drawing reference:
1- blade root；2- tenon tooth；3- intermediate；The high face of 4- inner arc root；5- carries on the back the high face of arc air inlet lateral root；It is high that 6- carries on the back arc outlet lateral root
Face；7- tenon tooth working face；
11- frame；12- fixture；13- gear item；14- inner arc detects template；15- carries on the back arc and detects template；16- imitation profile；
The high template of 21- inner arc root；22- carries on the back the high template of arc air inlet lateral root；23- carries on the back the high template of arc outlet lateral root；
31- tooth shape locating face；32- tooth top positioning surface；33- escape groove；The top surface of the high template of 34- inner arc root；35- carries on the back arc air inlet side
The top surface of the high template of root；The top surface of the 36- back high template of arc outlet lateral root；37- intermediate measuring surface；38- chamfering；
First tooth of 41-；42- center tooth；Last tooth of 43-；
Body side surface among 51-.
Specific embodiment
See Fig. 5 to Fig. 7, a kind of measuring tool for turbine blade root switching elevation carrection of the invention comprising interior
The high template 21 of arc root, the high template 22 of back arc air inlet lateral root and the back high template 23 of arc outlet lateral root, the high template 21 of inner arc root, back arc into
The high template 22 of gas side root and back the high template 23 of arc outlet lateral root respectively with the high face 4 of the inner arc root of blade root 1, back the high face of arc air inlet lateral root
5 are arranged in a one-to-one correspondence with the back high face 6 of arc outlet lateral root；The high template 21 of inner arc root, the high template 22 of back arc air inlet lateral root and back arc go out
Tooth shape locating face 31 and tooth top positioning surface 32, tooth shape locating face 31 and blade root are machined on the one side of the high template 23 of gas side root
The tenon tooth working face 7 of 1 first tooth 41 is bonded, the tooth top and blade root 1 of tooth top positioning surface 32 and first tooth 41 last
The tooth top of grain tooth 43 reclines, and for the ease of processing, tooth top positioning surface 32 is parallel to the tooth top and last tooth of first tooth 41
The common tangent of 43 tooth top positions in order to avoid crossing, is machined with the centre for avoiding blade root at the middle part of tooth top positioning surface 32
The escape groove 33 of tooth 42；The top surface 34 of the high template of inner arc root is the extended surface in the high face 4 of inner arc root, the back high template of arc air inlet lateral root
Top surface 35 is the extended surface for carrying on the back the high face 5 of arc air inlet lateral root, and the top surface 36 of the back high template of arc outlet lateral root is that back arc outlet lateral root is high
The extended surface in face 6；It is high in order to further reduce the high template 21 of inner arc root, the high template 22 of back arc air inlet lateral root and back arc outlet lateral root
The high template 21 of inner arc root, the high template 22 of back arc air inlet lateral root and the back high template 23 of arc outlet lateral root be by the volume of template 23
Thin plate-shaped structure (as shown in Figure 5), tooth shape locating face 31 and the setting of tooth top positioning surface 32 are in the high template 21 of inner arc root, back arc air inlet
On the thickness side of the high template 22 of lateral root and the back high template 23 of arc outlet lateral root.
See Fig. 6 to Fig. 7, the high template 21 of inner arc root, the high template 22 of back arc air inlet lateral root and the back high template 23 of arc outlet lateral root
On be also machined with intermediate measuring surface 37 respectively, intermediate measuring surface 37 be located at 32 top of tooth shape locating face and in blade root 1
Between body side surface 51 be correspondingly arranged, intermediate measuring surface 37 with intermediate body side surface 51 to external envelope 0.2mm ~ 0.3mm be arranged, thus this
Measuring tool had not only been capable of measuring blade root switching height, but also was capable of measuring the processing dimension of intermediate body side surface, realized multi-purpose, further saved
Measuring tool manufacturing cost.When measurement, the light leakage between intermediate measuring surface 37 and the intermediate body side surface 51 of blade root is detected, very
It is convenient, for the ease of light leak test, chamfering 38 is also machined in the two sides in intermediate side amount face 37.
The lower process using apparatus of the present invention measuring tool measurement blade root switching height is detailed below: by the high template of inner arc root
21 from the inner arc side of blade root 1 close to blade root 1, as shown in figure 5, making first tooth 41 of its tooth shape locating face 31 and blade root 1
Tenon tooth working face 7 is bonded, tooth top positioning surface 32 and the tooth top of the tooth top of first tooth 41 and last tooth 43 of blade root 1 patch
It leans on, then certain thickness clearance gauge is placed on to (which face on the high face 4 of inner arc root of the top surface 34 or blade root 1 of the high template of inner arc root
Height low just which face clearance gauge is placed on), touch the top surface 34 of the high template of inner arc root and the high face 4 of inner arc root of blade root 1 flat,
The thickness of clearance gauge is the difference in height of the two at this time, and same method can measure the high template 22 of back arc air inlet lateral root and back arc air inlet
Height between difference in height between the high face 5 of lateral root, and the high template 23 of back arc air inlet lateral root and the back high face 6 of arc outlet lateral root
Difference；The light leakage value d between intermediate measuring surface 37 and the intermediate body side surface 51 of blade root 1 is also detected using clearance gauge simultaneously.
Claims (6)
1. it is a kind of for turbine blade root switching elevation carrection measuring tool, it is characterised in that: it include the high template of inner arc root,
Carry on the back the high template of arc air inlet lateral root and the back high template of arc outlet lateral root, the high template of the inner arc root, the high sample of the back arc air inlet lateral root
Plate and the back high template of arc outlet lateral root go out gas side with the high face of inner arc root of blade root, the high face of back arc air inlet lateral root and back arc respectively
The high face of root is arranged in a one-to-one correspondence；The high template of the inner arc root, the high template of the back arc air inlet lateral root and the back arc outlet lateral root
Tooth shape locating face and tooth top positioning surface, first tooth in the tooth shape locating face and blade root are machined on the one side of high template
The fitting of tenon tooth working face, the tooth of last tooth of the tooth top and blade root of the tooth top positioning surface and first tooth
Topstick leans on；The top surface of the high template of inner arc root is the extended surface in the high face of inner arc root, the high template of the back arc air inlet lateral root
Top surface be it is described back the high face of arc air inlet lateral root extended surface, it is described back the high template of arc outlet lateral root top surface be the back arc go out
The extended surface in the gas side face Gen Gao.
2. a kind of measuring tool for turbine blade root switching elevation carrection according to claim 1, it is characterised in that:
The high template of the inner arc root, the high template of the back arc air inlet lateral root and the high template of the back arc outlet lateral root are lamellar knot
Structure, the tooth shape locating face and the tooth top positioning surface are arranged in the high template of the inner arc root, the high sample of the back arc air inlet lateral root
On the thickness side of plate and the back high template of arc outlet lateral root.
3. a kind of measuring tool for turbine blade root switching elevation carrection according to claim 1 or 2, feature exist
In: on the high template of the inner arc root, the high template of the back arc air inlet lateral root and the high template of the back arc outlet lateral root also respectively plus
Work has intermediate measuring surface, and the intermediate measuring surface is located above the tooth shape locating face and the intermediate side with the blade root
Face is correspondingly arranged, and the intermediate measuring surface is arranged with the intermediate outside envelope of body side surface.
4. a kind of measuring tool for turbine blade root switching elevation carrection according to claim 3, feature exist
In: the intermediate measuring surface is arranged with intermediate outside 0.2 mm of envelope of body side surface ~ 0.3mm.
5. a kind of measuring tool for turbine blade root switching elevation carrection according to claim 1, it is characterised in that:
The escape groove of the center tooth for avoiding the blade root is machined in the middle part of the tooth top positioning surface.
6. a kind of measuring tool for turbine blade root switching elevation carrection according to claim 1, it is characterised in that:
The tooth top positioning surface is parallel to the common tangent of the tooth top of first tooth and the tooth top of last tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506523.8A CN109357586B (en) | 2018-12-10 | 2018-12-10 | Measuring tool for measuring turbine blade root switching height |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506523.8A CN109357586B (en) | 2018-12-10 | 2018-12-10 | Measuring tool for measuring turbine blade root switching height |
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| Publication Number | Publication Date |
|---|---|
| CN109357586A true CN109357586A (en) | 2019-02-19 |
| CN109357586B CN109357586B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811506523.8A Active CN109357586B (en) | 2018-12-10 | 2018-12-10 | Measuring tool for measuring turbine blade root switching height |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296644A (en) * | 2019-06-24 | 2019-10-01 | 中国航发动力股份有限公司 | The tooling and method of variable quantity are repaired in a kind of measurement blade throwing |
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| CN203928954U (en) * | 2014-07-01 | 2014-11-05 | 东方电气集团东方汽轮机有限公司 | The general comprehensive measuring tool of a kind of blade with pinned root |
| CN204007385U (en) * | 2014-06-13 | 2014-12-10 | 南京赛达机械制造有限公司 | A kind of turbine blade is carried on the back the comprehensive measuring tool of arc steam passage and lagging edge height in measuring |
| CN209181667U (en) * | 2018-12-10 | 2019-07-30 | 无锡透平叶片有限公司 | A kind of measuring tool for turbine blade root switching elevation carrection |
-
2018
- 2018-12-10 CN CN201811506523.8A patent/CN109357586B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201392163Y (en) * | 2009-02-16 | 2010-01-27 | 无锡润和叶片制造有限公司 | Gantry measuring tool |
| CN203587019U (en) * | 2013-11-18 | 2014-05-07 | 四川绵竹鑫坤机械制造有限责任公司 | Measuring tool for comprehensive detection of rotor blade of compressor |
| CN103673829A (en) * | 2013-12-15 | 2014-03-26 | 无锡透平叶片有限公司 | Method for quickly detecting thickness of lower surface of blade in high-temperature thermal state |
| CN204007385U (en) * | 2014-06-13 | 2014-12-10 | 南京赛达机械制造有限公司 | A kind of turbine blade is carried on the back the comprehensive measuring tool of arc steam passage and lagging edge height in measuring |
| CN203928954U (en) * | 2014-07-01 | 2014-11-05 | 东方电气集团东方汽轮机有限公司 | The general comprehensive measuring tool of a kind of blade with pinned root |
| CN209181667U (en) * | 2018-12-10 | 2019-07-30 | 无锡透平叶片有限公司 | A kind of measuring tool for turbine blade root switching elevation carrection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296644A (en) * | 2019-06-24 | 2019-10-01 | 中国航发动力股份有限公司 | The tooling and method of variable quantity are repaired in a kind of measurement blade throwing |
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| CN109357586B (en) | 2023-09-22 |
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